Digital Electronics
EBCDIC is abbreviated as

 Extended Bit Coded Decimal Interchange Code
 Extended Binary Color Decimal Interchange Code
 Extended Binary Coded Decimal Interchange Code
 Extended Binary Coded Dectation Interchange Code

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Digital Electronics
A PROM

 is mask programmed
 can be programmed any number of times
 can be programmed only once
 is erasable by ultraviolet light

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